7838841668 has 24 divisors (see below), whose sum is σ = 15684725952. Its totient is φ = 3357994464.

The previous prime is 7838841667. The next prime is 7838841727. The reversal of 7838841668 is 8661488387.

It is a super-2 number, since 2×7838841668² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7838841667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1730 + ... + 125222.

It is an arithmetic number, because the mean of its divisors is an integer number (653530248).

Almost surely, 2^7838841668 is an apocalyptic number.

It is an amenable number.

7838841668 is an abundant number, since it is smaller than the sum of its proper divisors (7845884284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7838841668 is a wasteful number, since it uses less digits than its factorization.

7838841668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125771 (or 125769 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 59.

The square root of 7838841668 is about 88537.2332298678. The cubic root of 7838841668 is about 1986.4789353985.

The spelling of 7838841668 in words is "seven billion, eight hundred thirty-eight million, eight hundred forty-one thousand, six hundred sixty-eight".